Well, yes sort of. In my business case I needed to put the newly created user into an AD group. In the "Add user to AD group action" I could actually just put in the initials of the user in the "User" field of the configuration on the action :-)

I'd think after creating the AD user, you could query LDAP for the SAMAccountName you just created, retrieve the display name, and put that into a person variable. You can use the variable formatting to choose what you'd like to display it as, and put that into your SharePoint list people field. ...I think. I have no way of testing at the moment, haha. Hopefully someone will come in and say for sure!

Well, yes sort of. In my business case I needed to put the newly created user into an AD group. In the "Add user to AD group action" I could actually just put in the initials of the user in the "User" field of the configuration on the action :-)